Did you get some overpowder wads yet I don't see them listed.
These are IMHO the greatest thing ever for the C&B shooter easier to use than grease, less messy & they hold the powder in the chamber if you have to put the pistol down to do something (like picking up a ball) when re loading.

I'd raid the medicine cabinet too.
Q-tips & toothpicks are handy to have there for things like handling nipples (poke the pick in the hole for a handy-dandy handle/thread starter) & swabbing down inside the recesses with lube or cleaner. If you have a source get a couple of test-tube brushes as well they are handy for cleaning out the lower recesses of the cylinder.